Vent stick air freshener with dual action bodies and air flow tunnel

ABSTRACT

A vent stick air freshener has a pair of vent rods extending rearwardly from an annular head with a hollow therein, an open front end and an open rear end defining an air tunnel. At least one body is carried by at least one of the pair of vent rods. An insert is at least partially received in the hollow of the annular head. A space is defined between the insert and the annular head. The at least one body or the insert or both has a desired scent material interspersed therein and diffusible out over time.

PRIORITY CLAIM(S)

This is a continuation of U.S. patent application Ser. No. 14/281,345,filed May 29, 2014, which is hereby incorporated herein by reference.

BACKGROUND

1. Field of the Invention

The present invention relates generally to air fresheners. Moreparticularly, the present invention relates to a vent stick airfreshener.

2. Related Art

Various types of vent stick air fresheners have been proposed. Forexample, see U.S. Pat. Nos. 7,687,038; 7,687,037; 8,147,761; 8,480,960;8,460,609; 8,685,330; D594,954; D640,359; D650,892; D684,675. Thedevelopment and improvement of air fresheners, and vent stick airfresheners, is an ongoing endeavor.

SUMMARY OF THE INVENTION

It has been recognized that it would be advantageous to develop animproved air freshener, such as a vent stick air freshener, that canprovide a desired scent, and/or odor eliminating capabilities. Inaddition, it has been recognized that it would be advantageous todevelop an air freshener that can efficiently disperse the desired scentand/or odor eliminating material.

The invention provides a vent stick air freshener with an annular headhaving a hollow therein, an open front end and an open rear end definingan air tunnel through the annular head. A pair of vent rods extendsrearwardly from opposite sides of the annular head.

A gap is between the pair of vent rods. A hollow is in the head andextends from the open front end to the open rear end and to the gapbetween the pair of vent rods defining an air tunnel through the head tothe gap between the pair of vent rods. At least one body is carried byat least one of the pair of vent rods. An insert is at least partiallyreceived in the hollow of the annular head. A space is defined betweenthe insert and the annular head. The at least one body or the insert orboth have a desired scent material interspersed therein and diffusibleout over time.

In accordance with a more detailed aspect of the invention, another oneof the at least one body or the insert can have an odor eliminatingmaterial, different from the scent material, interspersed therein.

In addition, the invention provides a vent stick air freshener with anelongated tubular body having an open front end defining a head and anopen rear end bifurcated to form a pair of vent rods with a gap betweenthe pair of vent rods. A hollow is in the tubular body and extends fromthe open front end to the open rear end defining an air tunnel throughthe tubular body. At least one body is carried by at least one of thepair of vent rods. An insert is carried by the head and at leastpartially received in the hollow. An annular gap is defined between theinsert and the head, and in fluid communication with the air tunnel.

In accordance with a more detailed aspect of the invention, the at leastone body or the insert or both can have a desired scent materialinterspersed therein and diffusible out over time. Another one of the atleast one body or the insert can have an odor eliminating material,different from the scent material, interspersed therein.

Furthermore, the invention provides a vent stick air freshener with anelongated tubular body having a hollow therein and an open front end. Arear of the body is bifurcated to form a pair of vent rods. A gap isdefined between the pair of vent rods. An annular head is defined in thebody forward of the pair of vent rods, with each of the pair of ventrods extending from opposite sides of the annular head. At least onebody is carried by at least one of the pair of vent rods. An insert isat least partially received in the hollow of the annular head. A spaceis defined between the insert and the annular head. The at least onebody or the insert or both have a desired scent material interspersedtherein and diffusible out over time.

In accordance with a more detailed aspect of the invention, another oneof the at least one body or the insert can have an odor eliminatingmaterial, different from the scent material, interspersed therein.

BRIEF DESCRIPTION OF THE DRAWINGS

Additional features and advantages of the invention will be apparentfrom the detailed description which follows, taken in conjunction withthe accompanying drawings, which together illustrate, by way of example,features of the invention; and, wherein:

FIG. 1 is a perspective view of a vent stick air freshener in accordancewith an embodiment of the present invention;

FIG. 2 is a cross-sectional side view of the vent stick air freshener ofFIG. 1 taken along line 2-2 in FIG. 3;

FIG. 3 is a top view of the vent stick air freshener of FIG. 1;

FIG. 4 is a side view of the vent stick air freshener of FIG. 1;

FIG. 5 is a front view of the vent stick air freshener of FIG. 1;

FIG. 6 is a cross-sectional side schematic view of the vent stick airfreshener of FIG. 1;

FIG. 7 is a rear view of the vent stick air freshener of FIG. 1; and

FIG. 8 is a front view of the vent stick air freshener of FIG. 1, shownwith an insert removed.

Reference will now be made to the exemplary embodiments illustrated, andspecific language will be used herein to describe the same. It willnevertheless be understood that no limitation of the scope of theinvention is thereby intended.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENT(S)

The present invention provides an air freshener, and namely a vent stickair freshener, that can be utilized with an air vent having one or morelouvers extending across the air vent, and through which air blows. Suchan air vent can be found in a vehicle. The vent stick air freshener canprovide a desired scent material, interspersed within a body thereof,and diffusible out of the body over time. In another aspect, the ventstick air freshener can provide an odor eliminating material that canalso be interspersed within a body or insert thereof. In another aspect,the vent stick air freshener can provide both a desired scent material,interspersed within a body thereof, and diffusible out of the body overtime, and an odor eliminating material that can also be interspersedwithin another body or insert thereof Thus, one body can provide adesired scent, while the other body can eliminate odor, or carry amaterial that can eliminate odor. In addition, the vent stick airfreshener can provide an air tunnel through which air can flow, andwhich can expose opposite or multiple sides of one of the bodies to theflow of air. Furthermore, the vent stick air freshener can be shaped tohelp diffuse the air flow, and thus the desired scent, and/or odoreliminating material.

As illustrated in FIGS. 1-8, a vent stick air freshener, indicatedgenerally at 10, in an example implementation in accordance with theinvention is shown carried by a louver 14 of an air vent 18 (FIG. 6).Air can be forced through the air vent, indicated by dashed arrows 22.Thus, the air freshener can be disposed in the air flow from the airvent.

The air freshener 10 can include an elongated body 26, that can betubular or can be an elongated tubular body, having a hollow 30 therein,and an open front end 34. A rear of the body 26 can be bifurcated toform a pair of vent rods 38 and 40 that can extend through the louver 14into the air vent 18 (FIG. 6). A gap 44 is defined between the pair ofvent rods 38 and 40 to receive the louver 14 (FIG. 6). The gap canextend a majority of the length of the body such that a majority of thelength of the body is the pair of vent rods. An annular head 48 isdefined in the body 26 forward of the pair of vent rods 38 and 40, andextends from the louver 14 or in front of the louver 14 (FIG. 6). Theannular head 48 can be hollow or have a cavity therein, and the hollow30 can extend through the head 48, from the open front end 34 to an openrear end (52 or 54) of the head or the body, and to the gap 44, definingan air tunnel through the body and the head. Thus, the air tunnel can bedisposed in the body, and can extend from the cavity in the head, to thegap between the pair of vent rods. The gap 44 and the hollow 30 can besubstantially collinear. Thus, the air tunnel can extend continuouslythrough the gap, between the pair of vent rods, around the louver, andthrough the head. The pair of vent rods 38 and 40 can extend rearwardfrom the annular head 48, such as from opposite sides of the annularhead. The gap between the pair of vent rods has a gap height h betweenthe pair of vent rods, that is narrower or less than a diameter d of theair tunnel. Thus, the vent rods can accommodate an aperture, asdiscussed below. In addition, the pair of vent rods can have across-sectional shape that is arcuate, as shown in FIG. 7.

The air freshener has at least one body 58 carried by at least one ofthe pair of vent rods 38. The air freshener can have a pair of bodies 58and 60 carried by the pair of vent rods 38 and 40, respectively; or eachone carried by a different one of the pair of the pair of vent rods. Inone aspect, the bodies 58 and 60 can be scented bodies with a desiredscent material interspersed therein and diffusible out over time toprove a desired scent. In another aspect, the bodies 58 and 60 can beneutralizing bodies with a neutralizing agent interspersed therein anddiffusible out over time to neutralize odors.

The pair of vent rods 38 and 40 can have a pair of elongated notches 64and 66, respectively; or each one formed in a different one of the pairof vent rods. Each one of the bodies 58 and 60 can be disposed in thepair of notches 64 and 66, respectively; or each can be disposed in adifferent one of the pair of notches in the pair of vent rods. Thebodies 58 and 60 can be flush with a surface of the vent rods 38 and 40contiguous with and surrounding the bodies. Thus, the air flow 22 canflow smoothly across the bodies and the vent rod or body 26. The notchescan extend from the head substantially the entire length of the body 26,but with a portion of the head and a distal end of the vent rodsbounding the opposite distal ends of the notches, and thus the bodies.Thus, the bodies can also extend substantially the entire length of thebody to maximize surface area to diffuse scent or neutralizing agent.The bodies 58 and 60 can have a size and shape similar to the size andshape of the vent rods 38 and 40. Thus, the bodies can have a lengthlonger than a width. The bodies can have an exposed or exterior side orsurface, with indicia thereon.

In addition, each of the elongated notches 64 and 66 can have anaperture 70 in the notch and extending into the air tunnel or hollow 30.The apertures can be located at forward end of the notch, adjacent thehead 48. Each of the bodies 58 and 60 can have a portion 74 extendingtherefrom and into the aperture 70. Thus, the portions 74 of the bodies58 and 60 can be exposed to the air tunnel or hollow 30, and the flow ofair therethrough, to further disperse the scent or neutralizing agent.The portion 74 can extend along a significant portion of the length ofthe bodies, such as approximately half of the length of the bodies.

The bodies 58 and 60 can be attached to the body 26 or the vent rods 38and 40 in any appropriate manner. In one aspect, the bodies 58 and 60can be snap fit in the elongated notches 64 and 66. The vent rods 38 and40, or the notches 64 and 66, can include protrusions with enlargedheads to be inserted into cavities with narrower necks or openingstherein formed in the bodies 58 and 60. In addition, the bodies 58 and60 can each have a front lip 78, or pair of lips 78 and 80 separated bya notch 82. A lower lip 78 can extend into the aperture 70 in the notch64 or 66, and can extend under the head 48. An upper lip 80 can extendover the head 48. A portion of the head 48 adjacent the aperture 70 canbe received in the notch 82 between the lips. Thus, a forward portion ofthe bodies can extend across the aperture and be secured to the head.

In addition, the air freshener 10 can have an insert 86 carried by thehead 48, and at least partially received in the hollow 30 or cavity ofthe annular head. The insert 86 can be positioned in the head or hollowso that a space 90 is defined between the insert and the head, orinterior thereof. The space 90 can be annular, and can circumscribe orsurround the insert 86. The space is in fluid communication with thetunnel. Thus, the air flow can flow through the gap between the ventrods, and through the hollow or cavity in the head and around theinsert. The insert 86 can be formed of a compressible and/or elasticmaterial, and can be press fit between a pair of posts 94 (FIG. 8showing head with the insert removed) in the head. Thus, the insert canhave an interference fit with the pair of posts, and can be removable.In another aspect, the insert can be snap fit into the hollow, or onto apost. In another aspect, the insert can be adhered on a post.

The insert 86 can have a broad forward facing surface with a convexcurvature. Indicia 92 (FIG. 5) can be disposed on the surface. Theindicia can be a logo, or other information.

The annular head 48 can flare outwardly to help disperse the air flowfrom the air vent. The head 48 can have an exterior surface with aportion 94 laterally circumscribing the head and with a concave conicalshape to direct air flow from around an exterior of the air freshener orbody in an outward direction. In addition, the head 48 can have aninterior surface 98 circumscribing and surrounding the insert 86 andwith a convex conical shape. The insert 86 can have an exterior surface100 with a concave conical shape spaced-apart from the convex conicalshape of the interior surface 98 of the head. Thus, the space 90 canhave an annular shape that is conical and curved to disperse the airflow from within the air tunnel.

In one aspect, the insert 86 can have a desired scent materialinterspersed therein and diffusible out over time to prove a desiredscent. In another aspect, the insert 86 can have an odor eliminatingmaterial. The odor eliminating material can be interspersed therein, anddiffusible out over time. In another aspect, the odor eliminatingmaterial can absorb undesired scents.

As described above, the body(ies) 58 and 60 and the insert 86 can havethe desired scent material interspersed therein and diffusible out overtime. In one aspect, the body(ies) and the insert can have different,and/or complimentary, scents or scent material. The body(ies) can have agreater volume and/or surface area (or exposed surface area) than avolume and/or surface area of the insert. Thus, the scent or scentmaterial in the body(ies) can be predominant, while the scent or scentmaterial in the insert can be less predominant or strong.

In another aspect, the body(ies) 58 and 60 and the insert 86 can havethe desired scent material, and the insert 86 can have the odoreliminating material. Thus, a greater number and/or size or volume ofthe desired scent can be provided, and can be positioned along theexterior of the body 26, to provide a greater dispersal of the desiredscent (with respect to the odor elimination); while an odor eliminating(or absorbing) material can be positioned closer to a likely location ofthe undesired scent, i.e. in front of the air vent. In another aspect,the body(ies) 58 and 60 can have the odor eliminating material, and theinsert 86 can have the desired scent material. Thus, a greater numberand/or size or volume of the odor eliminating material can be provides,and can be positioned along the exterior of the body 26, to provide agreater dispersal of the odor eliminating material (with respect to thedesired scent); while a desired scent material can be positioned closerto a likely location of a user, i.e. in front of the air vent. Thus, atleast one of the at least one body or the insert has a desired scentmaterial interspersed therein and diffusible out over time, and anotherone of the at least one body or the insert has an odor eliminatingmaterial, different from the scent material, interspersed therein.

As described above, the scent material can be carried by the body(ies)58 and 60, which in turn can be carried by the vent rods 38 and 40. Inaddition, the scent material can be carried by the insert 86, which inturn can be carried by the head 48. The scent material can be in apolymer body. Thus, the body(ies) 58 and 60, and/or the insert 86, canbe formed of polymer, and can be polymer bodies, and can define acarrier material.

The polymer body can be flexible and resilient, such as a polymer gel.The polymer body can be elastic and coherent. Thus, the polymer body canbe compressible under an applied force, and substantially returnable toan original configuration upon removal of the applied force. It has beenfound that the polymer gel provides desired characteristics ofaesthetics, flexibility, longevity, substantially constant scentrelease, and containment. In accordance with another aspect of thepresent invention, the polymer gel can have a freestanding,self-supported, three-dimensional shape that does not significantlychange as the scent is released. The carrier material or polymer bodycan have a scent material of the desired scent or neutralizing agentinterspersed therein. The scent material or neutralizing agent candisperse or diffuse out of the carrier material or polymer body into theair or atmosphere where it can be detected, or where it can provide adiscernable scent, or can neutralize odors. It is believed that thescent material migrates or diffuses through and out of the carriermaterial or polymer body. The scent material can be high in volatilenotes, or has high volatility and can vaporize or evaporate at lowtemperatures. The scent material can include a scented oil. For example,suitable scent material can include pine, berry, vanilla, apple,coconut, cherry, pina colada, etc.

The carrier material or polymer body can include a polymer material,such as a polymer gel. The polymer body and/or polymer gel can beelastic and coherent. Thus, the polymer body can elastically deformunder normal conditions. The polymer body can be flexible and resilient,such that the body or gel can compress under an applied force, but cansubstantially return to its original configuration upon removal of theapplied force. The polymer gel, or the polymer body, can have afreestanding, self-supported, three-dimensional shape. Thus, the polymergel or polymer body can be consistent or solid enough to support ormaintain its shape in a freestanding manner without a container. Thethree-dimensional shape can be any desired shape. The polymer gel can beconsidered a solid material that is elastic and coherent, and thusflexible and capable of being deformed, but without being flowable.Thus, the polymer gel may have a sufficiently high molecular weight,and/or a sufficiently high viscosity, so that it is a non-flowable gel.In addition, the polymer gel can be considered as stable. Thus, thepolymer gel can be bendable, but otherwise substantially maintains itsform. The polymer body or polymer gel can be characterized as apolymeric material in the glass state with substantially no macroscopicflow. The polymeric material can have a glass transition temperaturegreater than approximately 110° F. The polymer gel can retain itsgel-like characteristic over time, without drying or cracking, andwithout becoming hard or brittle.

In one aspect, the polymer gel or polymer body can include apolyurethane material or can be a polyurethane gel. The gel can beformed by combining a polyurethane material with a scented oil.Surprisingly, it has been found that such a combination provides adesired scent, but without staining or substantially leaking onto asurface. In addition, the polymer body does not undergo a visuallyascertainable physical change, such as drying out or cracking. Thus, thepolymer body remains aesthetically pleasing.

In some aspects, a scented oil and a polymerizable monomer can becombined, along with optional initators or other reactants. Isocyanatereaction polymers have shown good results in connection with the presentinvention. For example, the polymer gel and scent material can be aurethane polymerization product of combining a scented oil with apolyether polyol, and then with a diphenylmethane diisocyanate (MDI)prepolymer. Therefore, in some embodiments, the scent material can be ascented oil which participates in the polymerization reaction betweenpolymerization reactants. For example, essential oils such as terpenesand the like can be mixed with polymerization reactants, or even inplace of some reactants. Without being bound by any particular theory,it is thought that at least some of the reduction or elimination inresidue in the devices of the present invention result from at leastpartial replacement of mineral oils and/or polyols with scented oilssuch as those listed herein. Other suitable isocyanates can include, butare not limited to, tolylene diisocyanates, methylene diphenylisocyanates, hexamethylene diisocyanates, prepolymers thereof, and thelike. Those skilled in the art will recognize various other isocyanatereaction polymers, i.e. polyurethanes, which can be suitable for use inconnection with the present invention.

Alternatively, the polymer gel or polymer body can include silicone,diffused polyurethane, polyvinylchloride (PVC), ethylene vinyl acetate(EVA), thermoplastic polyurethane (TPU), a polymer encapsulationfragrance delivery platform (PolyIFF®), thermoplastic elastomer (TPE),polypropylene, ethylene/methacrylic acid (E/MAA) copolymer, in which theMAA groups have been partially neutralized with lithium ions (Surlyn®Dupont), etc.

As a general guideline, the polymer gel or polymer body can be formed ofan elastomer such as, but not limited to, urethanes (including polyesterand polyether polyol/isocyanate polymerization products), polyacrylates,polybutadienes, ethylene propylene elastomers, silicones, natural andsynthetic rubbers, styrene/butadiene block copolymers, and the like. Insome embodiments, the polymer gel can be formed of a thermoplasticelastomer. Thermoplastic elastomers can be block copolymers such aspolyurethanes, polyamides, copolyesters, and styrene-butadiene-styrenepolymers. Other thermoplastic elastomers can be elastomer/thermoplasticblends such as ethylene-propylene-diene monomer in an isotacticpolypropylene phase or nitrile rubber dispersed in a PVC phase. As usedherein, “thermoplastic elastomer” refers to an elastomer which can beheated and processed like thermoplastic materials. Specifically, athermoplastic elastomer can be heated to a melted or flowable state andthen cooled, resulting in reformation of cross-linking and subsequentcoherency without a substantial change in mechanical properties such asstrength, flexural modulus, elastic modulus, etc.

As used herein, “elastomeric polymer” and “elastomer” may be usedinterchangeably and refer to a polymeric material which can bemechanically deformed and upon release returns to an original shape. Acoherent elastomer is also non-flowable at or near room temperatures.Further, “cling” and “clingy” refer to a property of a polymericmaterial which imparts adhesion to most surfaces without a loss ofcoherency in the polymer. Typically, removal of an elastomeric polymerbody with a clingy attachment surface from a substrate does not resultin substantial deformation, including temporary deformation, duringflexing of the elastomer and/or attachment surface. A clingy attachmentsurface can be provided directly by the polymer body or can be providedin a separate layer as discussed in more detail herein. Adhesion canoccur via mechanical adhesion or specific adhesion. Specific adhesionrefers to adhesion dominated, or entirely characterized, by secondaryintermolecular forces, i.e. non-covalent bonds, although some covalentbonds can be formed. Although the polymer gel or polymer body isfreestanding and self-supporting, it is also flexible and resilient.Thus, polymer body or carrier material can form a flexible and resilientstructure or body that can be selectively deformed and can returnsubstantially to the three-dimensional shape. In addition, the carriermaterial or polymer body can be opaque. Alternatively, the carriermaterial or polymer body can be light transmissive in at least atranslucent manner.

Various aspects of vent stick air fresheners are disclosed in U.S. Pat.Nos. 7,687,038; 7,687,037; 8,147,761; 8,480,960; 8,460,609; 8,685,330;D594,954; D640,359; D650,892; and D684,675; and U.S. patent applicationSer. Nos. 13/688,970; 13/798,912 (US Publication No. 2014/0113538); andSer. No. 14/066,354; which are hereby incorporated herein by reference.

While the forgoing examples are illustrative of the principles of thepresent invention in one or more particular applications, it will beapparent to those of ordinary skill in the art that numerousmodifications in form, usage and details of implementation can be madewithout the exercise of inventive faculty, and without departing fromthe principles and concepts of the invention. Accordingly, it is notintended that the invention be limited, except as by the claims setforth below.

What is claimed is:
 1. A vent stick air freshener, comprising: a) anannular head having a hollow therein, an open front end and an open rearend defining an air tunnel through the annular head; b) a pair of ventrods extending rearwardly from opposite sides of the annular head; c) agap between the pair of vent rods; d) a hollow in the head extendingfrom the open front end to the open rear end and to the gap between thepair of vent rods defining an air tunnel through the head to the gapbetween the pair of vent rods; e) at least one body carried by at leastone of the pair of vent rods; f) an insert at least partially receivedin the hollow of the annular head; g) a space defined between the insertand the annular head; and h) the at least one body or the insert or bothhaving a desired scent material interspersed therein and diffusible outover time.
 2. The device in accordance with claim 1, wherein another oneof the at least one body or the insert has an odor eliminating material,different from the scent material, interspersed therein.
 3. The devicein accordance with claim 1, wherein both the at least one body and theinsert have the desired scent material interspersed therein anddiffusible out over time.
 4. The device in accordance with claim 1,wherein the gap between the pair of vent rods and the hollow of theannular head are substantially collinear.
 5. The device in accordancewith claim 1, further comprising: a) at least one elongated notch formedin at least one of the pair of vent rods and receiving the at least onebody therein; and b) the at least one body being flush with a surface ofthe at least one vent rod contiguous with the at least one body.
 6. Thedevice in accordance with claim 1, further comprising: a) an aperture inthe at least one of the pair of vent rods extending into the air tunnel;and b) the at least one body has a portion extending into the apertureand exposed to the air tunnel.
 7. The device in accordance with claim 1,wherein the head has an exterior surface with a portion laterallycircumscribing the head with a concave conical shape.
 8. The device inaccordance with claim 1, wherein the gap between the pair of vent rodsis narrower between the pair of vent rods than a diameter of the airtunnel.
 9. The device in accordance with claim 1, wherein the spacedefined between the insert and the annular head is annular and surroundsthe insert.
 10. The device in accordance with claim 1, wherein the headhas an interior surface circumscribing the insert with a convex conicalshape; and wherein the insert has an exterior surface with a concaveconical shape spaced-apart from the convex conical shape of the interiorsurface of the head.
 11. A vent stick air freshener, comprising: a) anelongated tubular body having an open front end defining a head and anopen rear end bifurcated to form a pair of vent rods with a gap betweenthe pair of vent rods; b) a hollow in the tubular body extending fromthe open front end to the open rear end defining an air tunnel throughthe tubular body; c) at least one body carried by at least one of thepair of vent rods; d) an insert carried by the head and at leastpartially received in the hollow; and e) an annular gap defined betweenthe insert and the head, and in fluid communication with the air tunnel.12. The device in accordance with claim 11, wherein the at least onebody or the insert or both have a desired scent material interspersedtherein and diffusible out over time.
 13. The device in accordance withclaim 12, wherein another one of the at least one body or the insert hasan odor eliminating material, different from the scent material,interspersed therein.
 14. The device in accordance with claim 11,further comprising: a) at least one elongated notch formed in at leastone of the pair of vent rods and receiving the at least one bodytherein; and b) the at least one body being flush with a surface of theat least one vent rod contiguous with the at least one body.
 15. Thedevice in accordance with claim 11, further comprising: a) an aperturein the at least one of the pair of vent rods extending into the airtunnel; and b) the at least one body has a portion extending into theaperture and exposed to the air tunnel.
 16. The device in accordancewith claim 11, wherein the head has an exterior surface with a portionlaterally circumscribing the head with a concave conical shape.
 17. Thedevice in accordance with claim 11, wherein the gap between the pair ofvent rods is narrower between the pair of vent rods than a diameter ofthe air tunnel.
 18. The device in accordance with claim 11, wherein thespace defined between the insert and the annular head is annular andsurrounds the insert.
 19. The device in accordance with claim 11,wherein the head has an interior surface circumscribing the insert witha convex conical shape; and wherein the insert has an exterior surfacewith a concave conical shape spaced-apart from the convex conical shapeof the interior surface of the head.
 20. A vent stick air freshener,comprising: a) an elongated tubular body having a hollow therein and anopen front end; b) a rear of the body being bifurcated to form a pair ofvent rods; c) a gap defined between the pair of vent rods; d) an annularhead defined in the body forward of the pair of vent rods, with each ofthe pair of vent rods extending from opposite sides of the annular head;e) at least one body carried by at least one of the pair of vent rods;f) an insert at least partially received in the hollow of the annularhead; g) a space defined between the insert and the annular head; and h)the at least one body or the insert or both having a desired scentmaterial interspersed therein and diffusible out over time.
 21. Thedevice in accordance with claim 20, wherein another one of the at leastone body or the insert has an odor eliminating material, different fromthe scent material, interspersed therein.